/* 
   Copyright (C) 2013 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <arpa/inet.h>
#include <CUnit/CUnit.h>

#include "iscsi.h"
#include "iscsi-private.h"
#include "scsi-lowlevel.h"
#include "iscsi-test-cu.h"

static int change_cmdsn;

static int my_iscsi_queue_pdu(struct iscsi_context *iscsi, struct iscsi_pdu *pdu)
{
	switch (change_cmdsn) {
	case 1:
		/* change the cmdsn so it becomes too big */
		*(uint32_t *)&pdu->outdata.data[24] = htonl(iscsi->maxcmdsn + 1);
		break;
	}

	change_cmdsn = 0;	
	return 0;
}

void test_iscsi_cmdsn_invalid(void)
{ 
	int ret;

	logging(LOG_VERBOSE, LOG_BLANK_LINE);
	logging(LOG_VERBOSE, "Test sending invalid iSCSI CMDSN");
	logging(LOG_VERBOSE, "CMDSN MUST be in the range EXPCMDSN and MAXCMDSN");

	logging(LOG_VERBOSE, "Test that a CMDSN > MAXCMDSN is an error");
	logging(LOG_VERBOSE, "Send a TESTUNITREADY with CMDSN == MAXCMDSN+1");

	iscsic->use_immediate_data = ISCSI_IMMEDIATE_DATA_NO;
	iscsic->target_max_recv_data_segment_length = block_size;
	local_iscsi_queue_pdu = my_iscsi_queue_pdu;
	change_cmdsn = 1;
	/* we dont want autoreconnect since some targets will drop the
	 * connection on this condition.
	 */
	iscsi_set_noautoreconnect(iscsic, 1);
	iscsi_set_timeout(iscsic, 3);

	ret = testunitready(iscsic, tgt_lun);
	CU_ASSERT_EQUAL(ret, -1);
}